Hi guys. I've got a fat PSP with 5.00 m33-6. I've never had a problem with it before, but last night I started getting an error code when trying to load an ISO. Now, all my other ISOs won't load, it hangs at the PSP screen and then the PSP turns itself off. It's not dodgy ISOs, as it's happening on ones I've used before or downloaded off the PSN, and I'm using a real magicgate memory card that's always worked.

This only started after I tried patching a FFIV ISO with ISO Tool, could that have done anything?

Has anyone got any ideas on how to fix?

(I know similar probs have been posted previously, but none of those answers have worked for me :( )